i am after platinum in this game, i have 69% and i get more every day, however i do find veteran a real bitch and i have done about half of them in veteran but can't do any more, a friend has been helping me get the rest 4 the platinum and i was just wondering once he has done them all will the platinum appear after he has done downfall, i don't think it will matter if they are'nt all done on my system will it, it should str8 away know that all the other trophies are on my account???

I got the Platinum for a friend on my system in 2 days and he got it on his system too. You need to log in with your psn account and sync the trophies. Then you can get trophies and there you go. Sync it on your system and you will get all trophies that your friend made for you. The Trophies are stored online, just dont forget to sync them.
The grenades are no problem. You just need to know how to use them against themselves…

cod veteran is kind of easy u just have to stay in cover and when there are no enemies left move forward when u get tons of grenades thrown at u run back from where you came from then when they have blown up go back into that cover. Heart of the Reich definitely had to be the hardest. The other trophies are easy. Just to summarise cod veteran isnt easy but it can be easy when u know how